package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;

@Service
public class UserServiceImpl implements UserService {
    //WX_LOGIN = "https://api.weixin.qq.com/sns/jscode2session";
    public static final String WX_LOGIN = "https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatProperties weChatProperties;
    @Override
    public User login(UserLoginDTO userLoginDTO) {
        //判断是否传回openid 如果没有登入失败
        HashMap<String, String> paramMap = new HashMap<>();

        paramMap.put("secret",weChatProperties.getSecret());
        paramMap.put("appid",weChatProperties.getAppid());
        paramMap.put("js_code",userLoginDTO.getCode());
        paramMap.put("grant_type","authorization_code");
        String json = HttpClientUtil.doGet(WX_LOGIN, paramMap);
        JSONObject jsonObject = JSON.parseObject(json);
        String openid = jsonObject.getString("openid");
        if(openid==null ){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
        //判断是否为新用户 如果是自动注册
        User user = userMapper.getByOpenId(openid);
        if(user==null){
            //新用户 注册
            user = User.builder()
                    .openid(openid)
                    .createTime(LocalDateTime.now())
                    .build();
            userMapper.save(user);
        }
        return user;
    }
}
